Generally a person that attempts to break up a fun situation that is not nearly out of
hand, or something similar to that context.
AKA party
PooperSteve was leaning on a railing laughing with his friends. One of his friends said, "Oh snap, its the gestapo!.
Steve quickly got off the railing, instantly the laughter stopped. As the gestapo approached she growled "Stop playing around with that
blasted railing!... this is'ant gym class!".